With the development of extreme fast charging technology, charging stations need to use energy storage stations to reduce the rising peak to average power ratio (PAPR). Lithium-ion capacitor (LIC) is a chemical power source that uses both Faraday process and non-Faraday process to store energy. Because of its attractive performance in terms of rate characteristics and chemical stability, it is suitable for some energy storage stations that consider both power density and energy density. It is important to describe the current-voltage characteristics of LIC to predict the charge and discharge efficiency in the early design of energy storage power stations. During the test, however, a full discharge or charge results in a high temperature rise, and the electrical model parameters near a specific temperature point cannot be accurately obtained. The short current pulses cannot stabilize the polarization. In this paper, a high-accuracy parameters identification method based on an improved Butler-Volmer-Equation-Based electrical model is used to summarize the phenomena caused by the rate of change of high-energy LIC. The accuracy of the method is tested under the dynamic stress condition test. The maximum voltage error is less than 2%. Energy efficiency calculation based on the used model is simulated by the design condition from the energy storage station of the Haizhu line in Guangzhou. The maximum error is less than 0.2%.

中文翻译：

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高能锂离子电容器非线性电模型的高精度参数辨识

随着极快充电技术的发展，充电站需要使用储能站来降低不断上升的峰均功率比（PAPR）。锂离子电容器 (LIC) 是一种化学电源，它同时使用法拉第过程和非法拉第过程来存储能量。由于其在倍率特性和化学稳定性方面具有吸引力的性能，它适用于一些兼顾功率密度和能量密度的储能站。在储能电站的早期设计中，描述LIC的电流-电压特性对预测充放电效率具有重要意义。但在测试过程中，完全放电或完全充电会导致温度升高，无法准确获取特定温度点附近的电气模型参数。短电流脉冲不能稳定极化。本文采用一种基于改进的Butler-Volmer-Equation-Based电学模型的高精度参数识别方法，总结了高能LIC变化率引起的现象。在动态应力条件下测试了该方法的准确性。最大电压误差小于2%。以广州市海珠线储能站设计工况模拟基于所用模型的能效计算。最大误差小于0.2%。在动态应力条件下测试了该方法的准确性。最大电压误差小于2%。以广州市海珠线储能站设计工况模拟基于所用模型的能效计算。最大误差小于0.2%。在动态应力条件下测试了该方法的准确性。最大电压误差小于2%。以广州市海珠线储能站设计工况模拟基于所用模型的能效计算。最大误差小于0.2%。